Columbia leads the industry by prominently displaying an Underwriters Laboratories (UL) label on every product we make: cabs, doors, entrances and wireways.
Columbia also offers the industry's only entrance assembly that is tested and certified by Warnock-Hersey Int. Inc. for compliance with NFPA 105 for smoke penetration.
Tuesday, August 1, 2017
High-rise buildings, 1,000-plus-ft. in height, proliferating in southern California? That was unimaginable not that many years ago, but today, such structures – the largest of them known as “supertalls” – are dotting the West Coast landscape in increasing numbers and forming a typically more East Coast/Midwest-style urban skyline. For most of the 20th century, high-rise development in California was limited by seismic, financial and other practical issues.